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【单选题】
事务的持续性是指A.
事务中包括的所有操作要么都做，要么都不做。
B.
事务一旦提交，对数据库的改变是永久的。
C.
一个事务内部的操作对并发的其他事务是隔离的。
D.
事务必须是使数据库从一个一致性状态变到另一个一致性状态。
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【单选题】— How far is it from your home to the market? — _____________________ [ ]
A.
It's seven years old.
B.
It's about five kilometres.
C.
It is fine.
【简答题】How to put "market share" in Chinese?
【单选题】How is the opinion of the author about the London's insurance market?
A.
Great changes have taken place since 1990's at London insurance market.
B.
London's insurance market was too ancient to be changed.
C.
Little has really changed at London's insurance market in recent years.
D.
For centuries, no changes have taken place in London's insurance market.
【简答题】The author thinks that an intelt person knows ________. A) how to put up with some very prevalent myths B) how to find the best way to achieve success in tire C) how to avoid depression and make ...
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